The BGS Lexicon of Named Rock Units — Result Details

Reston Group

Computer Code: REST Preferred Map Code: REST
Status Code: Full
Age range: Ludlow Epoch (SU) — Early Devonian Epoch (DL)
Lithological Description: Conglomerates, sandstones,siltstones, mudstones and volcanic rocks of terrestrial, subaerial facies.
Definition of Lower Boundary: Unconformably overlying the Lower Palaeozoic rocks of the Southern Uplands.
Definition of Upper Boundary: Unconformably overlain by the Stratheden Group (Upper Devonian).
Thickness: 2350 m maximum thickness.
Geographical Limits: The Scottish Southern Uplands Terrane, bounded by the Southern Upland Fault to the north-west.
Parent Unit: Not Applicable (-)
Previous Name(s): Lower Old Red Sandstone And Lavas (-491)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Eyemouth, Sheet 34 [Scotland]. For reference sections, see the type sections for the component formations: Great Conglomerate Formation, Eyemouth Volcanic Formation and Auchencrow Burn Sandstone Formation. Greig, D C. 1988. 
Reference(s):
Greig, D C. 1988. Geology of the Eyemouth district. Memoir of the British Geological Survey, Sheet 34 (Scotland). 
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S034 S033 S033 S024 S025 S025 S026 S017 S018